Funding for this research was provided by:
Economic and Social Research Council (1223594)
Text and Data Mining valid from 2017-04-28
Received: 5 October 2016
Accepted: 13 April 2017
First Online: 28 April 2017
Compliance with Ethical Standards
: Claudia Eger has received a research grant from the Economic and Social Research Council and non-financial support from Explore Worldwide. Graham Miller and Caroline Scarles declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.